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| Mirrors > Home > MPE Home > Th. List > exlimddv | Structured version Visualization version Unicode version | ||
| Description: Existential elimination rule of natural deduction. (Contributed by Mario Carneiro, 15-Jun-2016.) |
| Ref | Expression |
|---|---|
| exlimddv.1 |
|
| exlimddv.2 |
|
| Ref | Expression |
|---|---|
| exlimddv |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | exlimddv.1 |
. 2
| |
| 2 | exlimddv.2 |
. . . 4
| |
| 3 | 2 | ex 450 |
. . 3
|
| 4 | 3 | exlimdv 1861 |
. 2
|
| 5 | 1, 4 | mpd 15 |
1
|
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